Clean MP40 Wet Side Gen 1 Disassemble

[Nateaqua]

Hello, I just purchase a used Ecotech MP40w power head. I have seen disembly instructions for the gen 2 on the internet, but can not find anything about taking a gen 1 apart. If anyone could help, I would be very greatful, just do not want to break it.

 

[Nateaqua]

Update.
I was able to remove the top cover. Should I only soak these parts in hot water only Is there a special way to clean the ceramic shaft. Also do in need to take the impeller off, how would I do this without messing the bottom up.

 

[xabo]

Soak in warm water and Citric Acid